CA2521424C - Fire-insulating wall covering and a preparation method for same - Google Patents
Fire-insulating wall covering and a preparation method for same Download PDFInfo
- Publication number
- CA2521424C CA2521424C CA2521424A CA2521424A CA2521424C CA 2521424 C CA2521424 C CA 2521424C CA 2521424 A CA2521424 A CA 2521424A CA 2521424 A CA2521424 A CA 2521424A CA 2521424 C CA2521424 C CA 2521424C
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- Canada
- Prior art keywords
- weight
- wall covering
- fire
- covering according
- sand
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000002360 preparation method Methods 0.000 title description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229920002522 Wood fibre Polymers 0.000 claims abstract description 26
- 239000004576 sand Substances 0.000 claims abstract description 19
- 239000004568 cement Substances 0.000 claims abstract description 16
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 14
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 14
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 14
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000000377 silicon dioxide Substances 0.000 claims abstract 7
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract 7
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 235000011128 aluminium sulphate Nutrition 0.000 description 4
- 239000001164 aluminium sulphate Substances 0.000 description 4
- BUACSMWVFUNQET-UHFFFAOYSA-H dialuminum;trisulfate;hydrate Chemical compound O.[Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O BUACSMWVFUNQET-UHFFFAOYSA-H 0.000 description 4
- 230000009970 fire resistant effect Effects 0.000 description 4
- 239000002023 wood Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 241000294754 Macroptilium atropurpureum Species 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910052586 apatite Inorganic materials 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- VSIIXMUUUJUKCM-UHFFFAOYSA-D pentacalcium;fluoride;triphosphate Chemical compound [F-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O VSIIXMUUUJUKCM-UHFFFAOYSA-D 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/10—Compositions or ingredients thereof characterised by the absence or the very low content of a specific material
- C04B2111/1075—Chromium-free or very low chromium-content materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention relates to a sound-absorbing and fire-insulating wall covering, comprising a cured mixture of: (i) 5-20% by weight mineralized wood fibre;
(ii) 20-60% by weight sand with an SiO2 content of less than 5% by weight and a greywacke content of at least 30% by weight; and (iii) 20-50% by weight cement, and to a method of preparing a fire-insulating wall covering, wherein relative to the cured weight are mixed 5-20% by weight mineralized wood fibre, 30-60% by weight sand with an SiO2 content smaller than 5% by weight and a greywacke content of at least 30% by weight, and 20-50% by weight cement, and 10-30% by weight water is then added, whereafter the mixture is cured to form the fire-insulating wall covering.
(ii) 20-60% by weight sand with an SiO2 content of less than 5% by weight and a greywacke content of at least 30% by weight; and (iii) 20-50% by weight cement, and to a method of preparing a fire-insulating wall covering, wherein relative to the cured weight are mixed 5-20% by weight mineralized wood fibre, 30-60% by weight sand with an SiO2 content smaller than 5% by weight and a greywacke content of at least 30% by weight, and 20-50% by weight cement, and 10-30% by weight water is then added, whereafter the mixture is cured to form the fire-insulating wall covering.
Description
FIRE-INSULATING WALL COVE1IVIG RIM A PREPA TIO ' METHOD
r R SZU4E
The present invention relates to a fire-insulating wall covering and to a method for preparing same. The present invention relates particularly to a fire-insulating and preferably also sound-absorbing wall covering which meets currently stringent requirements in respect of fire-insulating properties. Such a fire-insulating wall covering can be applied in tunnels, underground spaces such as shopping centres and the like.
Fire-insulating wall coverings known at the present time do not fully satisfy the stringent requirements in respect of fire-insulating properties.`In the case of a fire load on such a wall covering, for instance for 120 minutes, and a temperature on the fire side lying in the range of 1100 to 1350 C for these two hours, these fire-insulating properties mean, among other things, that this wall covering insulates against fire such that on the side of the wall covering remote from the fire the temperature remains relatively low, and particularly below 225 C, preferably below 200 C.
The wall covering must moreover have good sound-absorbing properties and is asbestos-free.
The invention has for its object to provide such a fire-insulating and sound-absorbing wall covering as well as a method for preparation thereof. It is noted here that the wall covering can be applied per se, but is preferably applied as wall covering arranged on a supporting layer, for instance a concrete layer which can optionally be strengthened with a reinforcement. The underlying layers are
r R SZU4E
The present invention relates to a fire-insulating wall covering and to a method for preparing same. The present invention relates particularly to a fire-insulating and preferably also sound-absorbing wall covering which meets currently stringent requirements in respect of fire-insulating properties. Such a fire-insulating wall covering can be applied in tunnels, underground spaces such as shopping centres and the like.
Fire-insulating wall coverings known at the present time do not fully satisfy the stringent requirements in respect of fire-insulating properties.`In the case of a fire load on such a wall covering, for instance for 120 minutes, and a temperature on the fire side lying in the range of 1100 to 1350 C for these two hours, these fire-insulating properties mean, among other things, that this wall covering insulates against fire such that on the side of the wall covering remote from the fire the temperature remains relatively low, and particularly below 225 C, preferably below 200 C.
The wall covering must moreover have good sound-absorbing properties and is asbestos-free.
The invention has for its object to provide such a fire-insulating and sound-absorbing wall covering as well as a method for preparation thereof. It is noted here that the wall covering can be applied per se, but is preferably applied as wall covering arranged on a supporting layer, for instance a concrete layer which can optionally be strengthened with a reinforcement. The underlying layers are
2 thus protected against high temperatures.
This is achieved according to the invention with a fire-insulating wall covering comprising a cured mixture of:
i) 5-20% by weight mineralized wood fibre;
ii) 20-60% by weight sand with an Si02 content of less than 5% by weight and a greywacke content of at least 30% by weight; and iii) 20-50% by weight cement.
The fire-insulating wall covering is in fact based on a cured cement plate having incorporated therein a specific type of wood fibre and a specific type of sand.
The applied wood fibre for inter alia sound absorption is a mineralized wood fibre. Such a mineralized wood fibre is obtained by bringing wood fibres into contact with a solution of aluminium sulphate. The wood fibres are generally obtained from residual wood which is processed in different steps to form wood fibre with a moisture content of about 15-25% (atro basis). The aluminium sulphate is added in a quantity of about 2.5% relative to the wood fibre and supplemented with a quantity of water, whereby the moisture percentage rises to about 100% (atro). The obtained wood fibres, which are thus covered with aluminium sulphate, are the mineralized wood fibres applied in the fire-insulating wall covering according to the invention.
The applied aluminium sulphate is of standard chemical quality.
The sand is a specific sand type since it is less than 5% by weight Si02. The sand further contains at least 30% by weight greywacke. Greywacke is a type of stone containing feldspar, apatite and the like. Clay mineral may also be present. It is a clastic sedimentary rock with a density of for instance 2.6 kg per m3. The greywacke can be applied in different grain size distributions (or combinations), where
This is achieved according to the invention with a fire-insulating wall covering comprising a cured mixture of:
i) 5-20% by weight mineralized wood fibre;
ii) 20-60% by weight sand with an Si02 content of less than 5% by weight and a greywacke content of at least 30% by weight; and iii) 20-50% by weight cement.
The fire-insulating wall covering is in fact based on a cured cement plate having incorporated therein a specific type of wood fibre and a specific type of sand.
The applied wood fibre for inter alia sound absorption is a mineralized wood fibre. Such a mineralized wood fibre is obtained by bringing wood fibres into contact with a solution of aluminium sulphate. The wood fibres are generally obtained from residual wood which is processed in different steps to form wood fibre with a moisture content of about 15-25% (atro basis). The aluminium sulphate is added in a quantity of about 2.5% relative to the wood fibre and supplemented with a quantity of water, whereby the moisture percentage rises to about 100% (atro). The obtained wood fibres, which are thus covered with aluminium sulphate, are the mineralized wood fibres applied in the fire-insulating wall covering according to the invention.
The applied aluminium sulphate is of standard chemical quality.
The sand is a specific sand type since it is less than 5% by weight Si02. The sand further contains at least 30% by weight greywacke. Greywacke is a type of stone containing feldspar, apatite and the like. Clay mineral may also be present. It is a clastic sedimentary rock with a density of for instance 2.6 kg per m3. The greywacke can be applied in different grain size distributions (or combinations), where
3 the grain size distribution is such that the average particle size can be around 1 mm, 4-8 mm, 11-16 mm.
The cement used is generally a portland cement, in particular a portland slag cement.
For an optimum fire-resistant property the wall covering preferably has a content of mineralized wood fibre of preferably 7-15% by weight, more preferably 10-15% by weight.
By selecting the content of mineralized wood fibre subject to the desired properties, not only is an optimum fire-resistant property obtained but also an optimum sound-insulating property. It is striking in this respect that use is made of a component based-. 'on wood fibre to obtain fire-resistant properties.
The fire-insulating wall covering preferably contains 35-50% by weight sand, while the Si02 content is preferably lower than 2.5% by weight, more preferably lower than 2% by weight. By opting for a relatively low Si02 content in combination with*an optimal choice of the quantity of greywacke, (preferably at least 50% by weight), optimum fire-insulating properties are obtained and the fire breakthrough can be extended a very long time and far beyond the test time (2 hours).
A fire-insulating wall covering is-found to suffice well in practice if it preferably contains i) 10-15% by weight mineralized wood fibre;
ii) 35-50% by weight sand with an Si02 content smaller than 2% by weight and a greywacke content greater than 50% by weight; and iii) 25-40% by weight cement.
The best properties are obtained if in this case the cement is a low-chromate cement.
The fire-insulating and fire-resistant properties of the wall covering can be further improved if the mineralized wood
The cement used is generally a portland cement, in particular a portland slag cement.
For an optimum fire-resistant property the wall covering preferably has a content of mineralized wood fibre of preferably 7-15% by weight, more preferably 10-15% by weight.
By selecting the content of mineralized wood fibre subject to the desired properties, not only is an optimum fire-resistant property obtained but also an optimum sound-insulating property. It is striking in this respect that use is made of a component based-. 'on wood fibre to obtain fire-resistant properties.
The fire-insulating wall covering preferably contains 35-50% by weight sand, while the Si02 content is preferably lower than 2.5% by weight, more preferably lower than 2% by weight. By opting for a relatively low Si02 content in combination with*an optimal choice of the quantity of greywacke, (preferably at least 50% by weight), optimum fire-insulating properties are obtained and the fire breakthrough can be extended a very long time and far beyond the test time (2 hours).
A fire-insulating wall covering is-found to suffice well in practice if it preferably contains i) 10-15% by weight mineralized wood fibre;
ii) 35-50% by weight sand with an Si02 content smaller than 2% by weight and a greywacke content greater than 50% by weight; and iii) 25-40% by weight cement.
The best properties are obtained if in this case the cement is a low-chromate cement.
The fire-insulating and fire-resistant properties of the wall covering can be further improved if the mineralized wood
4 fibres and/or the side of the wall covering to be exposed are provided with an impregnation which further improves the fire resistance and/or the durability of wood fibres. Such an impregnating agent is for instance the impregnating agent described in the German patent application 197 27998. This impregnating agent is preferably applied to the mineralized wood fibres in a quantity of 0.1-1% by weight, more preferably 0.1-0.5% by weight. In the case the wall covering is arranged on a wall to be exposed, it is recommended to apply the impregnating agent in a quantity of 30-500 gram per m2, preferably 100-250 gram per m2.
The fire-insulating wall covering according to the invention can in principle be formed on-site and cured on-site in a mould. It is however also possible for pre-cured plates to be taken to the location of use.
If the fire-insulating wall covering has an insufficient strength in itself and insufficient bearing capacity, it is recommended to arrange such a fire-insulating wall covering on a supporting layer, for instance a concrete layer or concrete plate.
In that case the fire-insulating wall covering can be formed on an already present concrete plate and attached thereto using connecting means. Another option is to arrange finished fire-insulating wall coverings on a prepared support layer using fixing means. Use is made in this case of openings arranged in the fire-insulating wall covering for arranging the fixing means and of plugs of fire-insulating wall covering to cover the fixing means.
In the case that a plurality of plates of fire-insulating wall covering according to the invention are applied, this results in joints. For optimal retention of the fire-insulating properties at the position of the joint, it is recommended to make use of an offset joint and to fill this joint with either fire-insulating wall covering in uncured form or with another fire-insulating seal.
A good fire-insulating wall covering is generally obtained according to the invention if relative to the cured
The fire-insulating wall covering according to the invention can in principle be formed on-site and cured on-site in a mould. It is however also possible for pre-cured plates to be taken to the location of use.
If the fire-insulating wall covering has an insufficient strength in itself and insufficient bearing capacity, it is recommended to arrange such a fire-insulating wall covering on a supporting layer, for instance a concrete layer or concrete plate.
In that case the fire-insulating wall covering can be formed on an already present concrete plate and attached thereto using connecting means. Another option is to arrange finished fire-insulating wall coverings on a prepared support layer using fixing means. Use is made in this case of openings arranged in the fire-insulating wall covering for arranging the fixing means and of plugs of fire-insulating wall covering to cover the fixing means.
In the case that a plurality of plates of fire-insulating wall covering according to the invention are applied, this results in joints. For optimal retention of the fire-insulating properties at the position of the joint, it is recommended to make use of an offset joint and to fill this joint with either fire-insulating wall covering in uncured form or with another fire-insulating seal.
A good fire-insulating wall covering is generally obtained according to the invention if relative to the cured
5 weight are mixed 5-20% by weight mineralized wood fibre, 30-60% by weight sand with an Si02 content smaller than 5% by weight and a greywacke content of at least 30% by weight; and 20-50% by weight cement, and 10-30% by weight water is then added, whereafter the mixture is cured to form the fire-insulating wall covering. Wall thicknesses of 10 to 500 mm are generally possible.
Mentioned and other features of the fire-insulating wall covering according to the invention and of the method for preparing such a fire-insulating wall covering will be further elucidated hereinbelow with reference to two embodiments, which are only given by way of example without the invention being deemed limited thereto.
Figures 1 and 3 each show a perspective view of a space provided with a fire-insulating wall covering; and figures 2 and 4 each show a cross-section at the position of details II
and IV respectively of figures 1 and 3.
For the preparation of the fire-insulating wall covering, use is made per m3 of:
- 12% by weight mineralized wood fibre - 32% by weight portland slag cement - 42% by weight sand (Si02 content smaller than 5% by weight, greywacke content 42% by weight) - 0.01% by weight pigment (chromium oxide) - 0.1% by weight impregnating agent (DE 197 27998) - residual water.
This mixture is placed in a mould provided with profiles, recesses for fixing points, rebates and joints. The mass is vibrated, pressed and finally released onto a ground
Mentioned and other features of the fire-insulating wall covering according to the invention and of the method for preparing such a fire-insulating wall covering will be further elucidated hereinbelow with reference to two embodiments, which are only given by way of example without the invention being deemed limited thereto.
Figures 1 and 3 each show a perspective view of a space provided with a fire-insulating wall covering; and figures 2 and 4 each show a cross-section at the position of details II
and IV respectively of figures 1 and 3.
For the preparation of the fire-insulating wall covering, use is made per m3 of:
- 12% by weight mineralized wood fibre - 32% by weight portland slag cement - 42% by weight sand (Si02 content smaller than 5% by weight, greywacke content 42% by weight) - 0.01% by weight pigment (chromium oxide) - 0.1% by weight impregnating agent (DE 197 27998) - residual water.
This mixture is placed in a mould provided with profiles, recesses for fixing points, rebates and joints. The mass is vibrated, pressed and finally released onto a ground
6 in order to cure. The formed plate is optionally sprayed at this moment with impregnating agent. Such a plate is applied in the embodiment shown in figures 1 and 2.
In another embodiment the fire-insulating wall covering according to the invention for curing is arranged, for instance in a curved mould, onto a support layer of concrete already arranged therein. After curing these structural parts can be applied in for instance the embodiment according to figures 3 and 4.
In another embodiment, preformed fire-insulating wall coverings according to the invention are placed in a mould after being provided with coupling means for coupling to the concrete layer to be arranged. Use is for instance made of wood screw bolts which protrude out of the surface and which will be taken up in the concrete layer to be arranged on this wall covering. Via the coupling means an optimal attachment is thus obtained between the concrete layer on the one hand and the wall covering according to the invention on the other.
Figure 1 shows a tunnel 1 provided with a concrete bearing structure 2 with fire-insulating wall coverings 3 according to the invention fixed thereto. Fixing means 4 are covered with conical plugs 5. Wall coverings 3 are mutually separated by a joint 6.
Figure 2 shows a detail in cross-section of the structure of this tunnel wall which is provided with wall coverings 3 according to the invention. Wall covering 3 is arranged in the concrete bearing structure 2 using fixing means 4, in this case cotter bolts 7. This bearing structure 2 is further provided with a reinforcement 8.
As shown in figure 2, joint 6 is an offset joint which is filled, wholly or only in the two straight joint parts, with a fire-insulating seal 9, optionally a mass of the
In another embodiment the fire-insulating wall covering according to the invention for curing is arranged, for instance in a curved mould, onto a support layer of concrete already arranged therein. After curing these structural parts can be applied in for instance the embodiment according to figures 3 and 4.
In another embodiment, preformed fire-insulating wall coverings according to the invention are placed in a mould after being provided with coupling means for coupling to the concrete layer to be arranged. Use is for instance made of wood screw bolts which protrude out of the surface and which will be taken up in the concrete layer to be arranged on this wall covering. Via the coupling means an optimal attachment is thus obtained between the concrete layer on the one hand and the wall covering according to the invention on the other.
Figure 1 shows a tunnel 1 provided with a concrete bearing structure 2 with fire-insulating wall coverings 3 according to the invention fixed thereto. Fixing means 4 are covered with conical plugs 5. Wall coverings 3 are mutually separated by a joint 6.
Figure 2 shows a detail in cross-section of the structure of this tunnel wall which is provided with wall coverings 3 according to the invention. Wall covering 3 is arranged in the concrete bearing structure 2 using fixing means 4, in this case cotter bolts 7. This bearing structure 2 is further provided with a reinforcement 8.
As shown in figure 2, joint 6 is an offset joint which is filled, wholly or only in the two straight joint parts, with a fire-insulating seal 9, optionally a mass of the
7 PCT/NL2004/000237 insulating wall covering according to the invention still to be cured.
Figures 3 and 4 show a pedestrian passage 10, for instance in an underground station. Use is made in this case of wall plates 12 and 13 which are preformed and set up in situ. Wall plates 12 and 13 once again comprise a concrete support structure and a wall covering 14 according to the invention. Wall covering 14 is provided with wood screw bolts onto which is poured the concrete bearing structure 11, 10 which is also provided with a reinforcement 8.
In both cases the wall coverings 3 and 14 according to the invention are found to satisfy the stringent requirements made in respect of fire-insulating properties. When exposed to a temperature regime as according to the table below, it 15 was found that on the side of such a 100 mm wall covering remote from the fire the temperature remains below 120 C, and is even close to a temperature lying between 100 and 110 C.
Time Temperature (min) ('C)
Figures 3 and 4 show a pedestrian passage 10, for instance in an underground station. Use is made in this case of wall plates 12 and 13 which are preformed and set up in situ. Wall plates 12 and 13 once again comprise a concrete support structure and a wall covering 14 according to the invention. Wall covering 14 is provided with wood screw bolts onto which is poured the concrete bearing structure 11, 10 which is also provided with a reinforcement 8.
In both cases the wall coverings 3 and 14 according to the invention are found to satisfy the stringent requirements made in respect of fire-insulating properties. When exposed to a temperature regime as according to the table below, it 15 was found that on the side of such a 100 mm wall covering remote from the fire the temperature remains below 120 C, and is even close to a temperature lying between 100 and 110 C.
Time Temperature (min) ('C)
Claims (16)
1. Fire-insulating wall covering, comprising a cured mixture of-i. 5-20% by weight mineralized wood fibre;
ii. 20-60% by weight sand and with an SiO2 content of less than 5% by weight and a greywacke content of at least 30% by weight; and iii. 20-50% by weight cement.
ii. 20-60% by weight sand and with an SiO2 content of less than 5% by weight and a greywacke content of at least 30% by weight; and iii. 20-50% by weight cement.
2. Wall covering according to claim 1, containing 7-15% by weight mineralized wood fibre.
3. Wall covering according to claim 2, containing 10-15% by weight mineralized wood fibre.
4. Wall covering according to any one of claims 1-3, containing 35-50% by weight sand.
5. Wall covering according to any one of claims 1-4, wherein the sand has an SiO2 content smaller than 2.5% by weight.
6. Wall covering according to claim 5, wherein the sand has an SiO2 content smaller than 2% by weight.
7. Wall covering according to any one of claims 1-6, wherein the sand contains at least 40% by weight greywacke.
8. Wall covering according to claim 7, wherein the sand contains at least 50%
by weight greywacke.
by weight greywacke.
9. Wall covering according to any one of claims 1-8, containing 25-40% by weight cement.
10. Wall covering according to any one of claims 1-9, containing:
i. 10-15% by weight mineralized wood fibre;
ii. 35-50% by weight sand with an SiO2 content smaller than 2% by weight and a greywacke content greater than 50% by weight; and, iii. 25-40% by weight cement.
i. 10-15% by weight mineralized wood fibre;
ii. 35-50% by weight sand with an SiO2 content smaller than 2% by weight and a greywacke content greater than 50% by weight; and, iii. 25-40% by weight cement.
11. Wall covering according to any on of claims 1-10, wherein the cement is low-chromate.
12. Wall covering according to any one of claims 1-11, containing 0.1-1% by weight impregnating agent.
13. Wall covering according to claim 12, containing 0.1-0.5% by weight impregnating agent.
14. Wall covering according to any one of claims 1-11, containing 30-500 gram per m2 impregnating agent.
15. Wall covering according to claim 14, containing 100-250 gram per m2 impregnating agent.
16. Method of preparing a fire-insulating wall covering according to claim 1, wherein relative to the cured weight are mixed 5-20% by weight mineralized wood fibre, 20-60% by weight sand with an SiO2 content smaller than 5% by weight and a greywacke content of at least 30% by weight, and 20-50% by weight cement, and 10-30% by weight water is then added, whereafter the mixture is cured to form the fire-insulating wall covering.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL1023149A NL1023149C2 (en) | 2003-04-11 | 2003-04-11 | Fire-insulating wall covering and a method for the preparation thereof. |
| NL1023149 | 2003-04-11 | ||
| PCT/NL2004/000237 WO2004089847A1 (en) | 2003-04-11 | 2004-04-08 | Fire-insulating wall covering and a preparation method for same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2521424A1 CA2521424A1 (en) | 2004-10-21 |
| CA2521424C true CA2521424C (en) | 2010-10-26 |
Family
ID=33157436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2521424A Expired - Lifetime CA2521424C (en) | 2003-04-11 | 2004-04-08 | Fire-insulating wall covering and a preparation method for same |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1615859A1 (en) |
| CA (1) | CA2521424C (en) |
| NL (1) | NL1023149C2 (en) |
| WO (1) | WO2004089847A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110316989A (en) * | 2019-07-11 | 2019-10-11 | 济南大学 | Concrete coarse aggregate of carbon fiber and preparation method thereof is wrapped up in outside a kind of |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE555602A (en) * | ||||
| CH261579A (en) * | 1948-01-14 | 1949-05-31 | Hauser Carl | Component. |
| NO170626C (en) * | 1990-05-18 | 1992-11-11 | Norsk Proco As | NON-PROTECTED, WATERPROOF AND ACID RESISTANT PRODUCT |
| US5573589A (en) * | 1993-03-10 | 1996-11-12 | Sandoz Ltd. | Cement compositions containing a sulfated polysaccharide and method |
| DE4311476A1 (en) * | 1993-04-08 | 1994-10-13 | Saarbergwerke Ag | Process for the production of cement-bound chipboard |
| CH689594A5 (en) * | 1995-08-16 | 1999-06-30 | Nueva Ag | A process for the production of moldings from fiber-reinforced hydraulically setting material. |
| DE19831295A1 (en) * | 1998-07-13 | 2000-01-20 | Hubert Koertge | Porous lightweight concrete for prefabricated housing parts contains cement-coated expanded polystyrene beads, prewetted expanded slate, melamine-based flow improver, foam and water |
| EP1001000A1 (en) * | 1998-11-11 | 2000-05-17 | Thermal Ceramics Italiana S.R.L. | Fire protection for buildings and other civil engineering constructions |
| FR2789677B1 (en) * | 1999-02-12 | 2001-05-18 | Lafarge Platres | PREFABRICATED PLASTER-BASED CONSTRUCTION ELEMENT, AND IN PARTICULAR PLASTER-BASED PLATE, HAVING IMPROVED FIRE RESISTANCE |
| DE19951281A1 (en) * | 1999-10-25 | 2001-04-26 | Cebim Handelsmij B V | Building plate for flooring and in facade and inner walls is obtained from a starting mixture containing dry wood chips, cement, aluminum sulfate, water glass, water and colored concrete and/or other pigment |
| US6506247B1 (en) * | 2001-11-28 | 2003-01-14 | Hercules Chemical Company Incorporated | Low silica furnace cement |
-
2003
- 2003-04-11 NL NL1023149A patent/NL1023149C2/en not_active IP Right Cessation
-
2004
- 2004-04-08 WO PCT/NL2004/000237 patent/WO2004089847A1/en active Application Filing
- 2004-04-08 CA CA2521424A patent/CA2521424C/en not_active Expired - Lifetime
- 2004-04-08 EP EP20040726681 patent/EP1615859A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| CA2521424A1 (en) | 2004-10-21 |
| EP1615859A1 (en) | 2006-01-18 |
| NL1023149C2 (en) | 2004-10-14 |
| WO2004089847A1 (en) | 2004-10-21 |
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